Prepare WebP images for content columns, product cards, and responsive breakpoints by setting one exact width while the browser calculates proportional height.
How to use Resize WebP
- Add one or more static WebP files.
- Set a target width from 1 to 4096 pixels and choose output quality.
- Resize, verify the reported dimensions, and download the results.
What this tool is good at
When to use Resize WebP
Responsive source preparation
Generate a smaller intrinsic width for cards, sidebars, email, or mobile layouts instead of shipping oversized pixels.
CMS dimension limits
Meet a required maximum width while keeping the original aspect ratio automatically.
Batch thumbnail production
Create consistently sized static WebP thumbnails for related content in one local queue.
How to choose the right settings
Resize to the display need
Choose the largest physical pixel width the destination actually requires, including high-density screens when relevant.
Avoid unnecessary upscaling
Increasing dimensions invents interpolated pixels and usually creates a larger file without adding real detail.
Balance width and quality
Dimensions usually drive the largest saving. After choosing width, adjust encoding quality only if additional reduction is needed.
Practical workflow and output details
Height is calculated from the source aspect ratio, avoiding accidental stretching. The browser resamples the decoded image and creates a fresh WebP at the selected quality.
The static pipeline preserves alpha but rejects animation. Metadata and embedded color profiles are not copied into the resized output.
Format behavior and limitations
The resized file is re-encoded as lossy WebP at the selected quality.
Animation and metadata are not preserved; very large decoded images are blocked by a pixel safety limit.
Frequently asked questions
How is the output height calculated?
The processor uses the source aspect ratio and rounds the matching height to the nearest whole pixel.
Can I enlarge a WebP?
Yes, up to 4096 pixels wide, but enlarging cannot create detail that the source does not contain.
Does resizing keep animation?
No. Animated WebP files are rejected because this processor handles still images only.
Related WebP tools
Compress WebP
Reduce static WebP file sizes with an adjustable quality setting and local batch processing.
WebP to PNG
Turn static WebP images into lossless PNG files while preserving transparent pixels.
JPG to WebP
Convert JPG and JPEG images to compact WebP files privately in your browser.